_filter_url_escape_comments($match, $escape = NULL)
Escapes the contents of HTML comments.
Callback for preg_replace_callback() within _filter_url().
Parameters
array $match: An array containing matches to replace from preg_replace_callback(), whereas $match[1] is expected to contain the content to be filtered.
bool|null $escape: (optional) A Boolean indicating whether to escape (TRUE) or unescape comments (FALSE). Defaults to NULL, indicating neither. If TRUE, statically cached $comments are reset.
Related topics
- Standard filters
- Filters implemented by the Filter module.
File
- core/modules/filter/filter.module, line 645
- Framework for handling the filtering of content.
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | function _filter_url_escape_comments($match, $escape = NULL) { static $mode, $comments = array(); if (isset($escape)) { $mode = $escape; if ($escape) { $comments = array(); } return; } // Replace all HTML comments with a '<!-- [hash] -->' placeholder. if ($mode) { $content = $match[1]; $hash = hash('sha256', $content); $comments[$hash] = $content; return "<!-- $hash -->"; } // Or replace placeholders with actual comment contents. else { $hash = $match[1]; $hash = trim($hash); $content = $comments[$hash]; return "<!--$content-->"; }} |
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